Revert "Remove gmp from AOS"
This reverts commit f37c97684f0910a3f241394549392f00145ab0f7.
We need gmp for SymEngine for symbolicmanipultion in C++
Change-Id: Ia13216d1715cf96944f7b4f422b7a799f921d4a4
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/third_party/gmp/mpn/arm/copyd.asm b/third_party/gmp/mpn/arm/copyd.asm
new file mode 100644
index 0000000..bcad98d
--- /dev/null
+++ b/third_party/gmp/mpn/arm/copyd.asm
@@ -0,0 +1,84 @@
+dnl ARM mpn_copyd.
+
+dnl Contributed to the GNU project by Robert Harley and Torbjörn Granlund.
+
+dnl Copyright 2003, 2012, 2013 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+dnl
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of either:
+dnl
+dnl * the GNU Lesser General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your
+dnl option) any later version.
+dnl
+dnl or
+dnl
+dnl * the GNU General Public License as published by the Free Software
+dnl Foundation; either version 2 of the License, or (at your option) any
+dnl later version.
+dnl
+dnl or both in parallel, as here.
+dnl
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+dnl for more details.
+dnl
+dnl You should have received copies of the GNU General Public License and the
+dnl GNU Lesser General Public License along with the GNU MP Library. If not,
+dnl see https://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+C cycles/limb
+C StrongARM ?
+C XScale ?
+C Cortex-A7 ?
+C Cortex-A8 ?
+C Cortex-A9 1.25-1.5
+C Cortex-A15 1.25
+
+C TODO
+C * Consider wider unrolling. Analogous 8-way code runs 10% faster on both A9
+C and A15. But it probably slows things down for 8 <= n < a few dozen.
+
+define(`rp', `r0')
+define(`up', `r1')
+define(`n', `r2')
+
+ASM_START()
+PROLOGUE(mpn_copyd)
+ mov r12, n, lsl #2
+ sub r12, r12, #4
+ add rp, rp, r12
+ add up, up, r12
+
+ tst n, #1
+ beq L(skip1)
+ ldr r3, [up], #-4
+ str r3, [rp], #-4
+L(skip1):
+ tst n, #2
+ beq L(skip2)
+ ldmda up!, { r3,r12 }
+ stmda rp!, { r3,r12 }
+L(skip2):
+ bics n, n, #3
+ beq L(rtn)
+
+ push { r4-r5 }
+ subs n, n, #4
+ ldmda up!, { r3,r4,r5,r12 }
+ beq L(end)
+
+L(top): subs n, n, #4
+ stmda rp!, { r3,r4,r5,r12 }
+ ldmda up!, { r3,r4,r5,r12 }
+ bne L(top)
+
+L(end): stmda rp, { r3,r4,r5,r12 }
+ pop { r4-r5 }
+L(rtn): return lr
+EPILOGUE()